面向边缘智能计算的数据场分类算法  

Data field classification algorithm for edge intelligent computing

作　　者：孙志于[1] 王琪 高彬 梁中军[3] 徐晓斌 王尚广[4] SUN Zhiyu;WANG Qi;GAO Bin;LIANG Zhongjun;XU Xiaobin;WANG Shangguang(Xinjiang Meteorological Information Center,Urumqi Xinjiang 830002,China;Faculty of Information Technology,Beijing University of Technology,Beijing 100124,China;Information Service Department,National Meteorological Information Center,Beijing 100081,China;State Key Laboratory of Networking and Switching Technology,Beijing University of Posts and Telecommunications,Beijing 100876,China)

机构地区：[1]新疆气象信息中心,乌鲁木齐830002 [2]北京工业大学信息学部,北京100124 [3]国家气象信息中心资料服务室,北京100081 [4]网络与交换技术国家重点实验室(北京邮电大学),北京100876

出　　处：《计算机应用》2022年第11期3473-3478,共6页journal of Computer Applications

摘　　要：针对聚类算法研究中普遍存在不能充分利用历史信息、参数优化过程慢的问题,结合边缘智能计算提出了一种基于数据场的分布式自适应分类算法,算法部署于边缘计算(EC)节点,提供本地的智能分类服务。该算法通过引入监督信息改造传统数据场聚类模型的结构,使其能够应用于分类问题,扩展了数据场理论可应用的领域。基于数据场思想,该算法将数据的域值空间转化为数据势场空间,依据空间势值将数据分为无标签的多个类簇结果,再将类簇结果与历史监督信息进行云相似度比较,并将其归属于与其最相似的类中;同时,提出了一种基于滑动步长的参数搜索策略以提高算法参数的优化速度。在此算法基础上还提出了一种基于分布式的数据处理方案,通过云中心与边缘设备的协作,将分类任务切割分配到不同层次的节点,实现模块化、低耦合。仿真结果表明,所提算法的查准率和查全率均保持在96%以上,且汉明损失均低于0.022。实验结果表明,所提算法可以准确分类并提高参数优化速度,整体性能优于逻辑回归(LR)算法与随机森林(RF)算法。In view of the general problems of not fully utilizing historical information and slow parameter optimization process in the research of clustering algorithms,an adaptive classification algorithm based on data field was proposed in combination with edge intelligent computing,which can be deployed on Edge Computing(EC)nodes to provide local intelligent classification service.By introducing supervision information to modify the structure of the traditional data field clustering model,the proposed algorithm enabled the traditional data field to be applied to classification problems,extending the applicable fields of data field theory.Based on the idea of the data field,the proposed algorithm transformed the domain value space of the data into the data potential field space,and divided the data into several unlabeled cluster results according to the spatial potential value.After comparing the cluster results with the historical supervision information for cloud similarity,the cluster results were attributed to the most similar category.Besides,a parameter search strategy based on sliding step length was proposed to speeded up the parameter optimization of the proposed algorithm.Based on this algorithm,a distributed data processing scheme was proposed.Through the cooperation of cloud center and edge devices,classification tasks were cut and distributed to different levels of nodes to achieve modularity and low coupling.Simulation results show that the precision and recall of the proposed algorithm maintained above 96%,and the Hamming loss was less than 0.022.Experimental results show that the proposed algorithm can accurately classify and accelerate the speed of parameter optimization,and outperforms than Logistic Regression(LR)algorithm and Random Forest(RF)algorithm in overall performance.

关 键 词：边缘智能计算 分布式数据处理 参数优化 数据场 自适应分类 

分 类 号：TP301[自动化与计算机技术—计算机系统结构]